|
| observation | mean | sd | min | max |
| ip | 2640 | 4.623 | 0.142 | 3.968 | 5.713 |
| er | 2640 | 4.631 | 0.589 | 4.372 | 12.971 |
| ppi | 2640 | 4.618 | 0.040 | 4.416 | 4.811 |
| mc | 2640 | 4.589 | 0.018 | 4.447 | 4.666 |
| y | 2640 | 4.670 | 0.067 | 4.453 | 4.973 |
| rii | 2640 | 0.040 | 0.021 | 0.006 | 0.083 |